diff --git a/lua/flatbuffers/numTypes.lua b/lua/flatbuffers/numTypes.lua
index e8d87e124..84d0261c5 100644
--- a/lua/flatbuffers/numTypes.lua
+++ b/lua/flatbuffers/numTypes.lua
@@ -119,8 +119,8 @@ local int16_mt =
 local int32_mt = 
 {
     bytewidth = 4,
-    min_value = -2^15,
-    max_value = 2^15-1,
+    min_value = -2^31,
+    max_value = 2^31-1,
     lua_type = type(1),
     name = "int32",
     packFmt = "<i4"
@@ -195,4 +195,4 @@ end
 
 GenerateTypes(m)
 
-return m
\ No newline at end of file
+return m